Yvonne reads about 20 pages a night before she goes to bed.N stands for the number of nights she has read and P stands for the total number of pages which one is a dependent and independent variable?
In this situation, Yvonne's number of nights reading, "N", is the independent variable. This is because Yvonne can choose the number of nights she reads, and this decision does not depend on the number of pages she has read.
On the other hand, the total number of pages, "P", is the dependent variable. This is because the number of pages Yvonne has read is determined by the number of nights she has read, 20 pages per night. In other words, the total number of pages she has read is dependent on the number of nights she has read.
So, the equation that represents this relationship is P = 20N, where N is the number of nights and P is the number of pages.